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ACPICA: Change behavior of object copy for mutex/event objects

When copying these internal objects, cannot simply copy the
underlying OS object. A new OS object must be created.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Bob Moore 16 년 전
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1개의 변경된 파일23개의 추가작업 그리고 0개의 파일을 삭제
  1. 23 0
      drivers/acpi/acpica/utcopy.c

+ 23 - 0
drivers/acpi/acpica/utcopy.c

@@ -676,6 +676,7 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
 {
 	u16 reference_count;
 	union acpi_operand_object *next_object;
+	acpi_status status;
 
 	/* Save fields from destination that we don't want to overwrite */
 
@@ -768,6 +769,28 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
 		}
 		break;
 
+		/*
+		 * For Mutex and Event objects, we cannot simply copy the underlying
+		 * OS object. We must create a new one.
+		 */
+	case ACPI_TYPE_MUTEX:
+
+		status = acpi_os_create_mutex(&dest_desc->mutex.os_mutex);
+		if (ACPI_FAILURE(status)) {
+			return status;
+		}
+		break;
+
+	case ACPI_TYPE_EVENT:
+
+		status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0,
+						  &dest_desc->event.
+						  os_semaphore);
+		if (ACPI_FAILURE(status)) {
+			return status;
+		}
+		break;
+
 	default:
 		/* Nothing to do for other simple objects */
 		break;